all: spell "marshal" and "unmarshal" consistently

The tree is inconsistent about single l vs double l in those
words in documentation, test messages, and one error value text.

	$ git grep -E '[Mm]arshall(|s|er|ers|ed|ing)' | wc -l
	      42
	$ git grep -E '[Mm]arshal(|s|er|ers|ed|ing)' | wc -l
	    1694

Make it consistently a single l, per earlier decisions. This means
contributors won't be confused by misleading precedence, and it helps
consistency.

Change the spelling in one error value text in newRawAttributes of
crypto/x509 package to be consistent.

This change was generated with:

	perl -i -npe 's,([Mm]arshal)l(|s|er|ers|ed|ing),$1$2,' $(git grep -l -E '[Mm]arshall' | grep -v AUTHORS | grep -v CONTRIBUTORS)

Updates #12431.
Follows https://golang.org/cl/14150.

Change-Id: I85d28a2d7692862ccb02d6a09f5d18538b6049a2
Reviewed-on: https://go-review.googlesource.com/33017
Run-TryBot: Minux Ma <minux@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

5 files changed, 14 insertions, 14 deletions

diff --git a/src/encoding/xml/marshal.go b/src/encoding/xml/marshal.go
index d1879c1167..1176f5d717 100644
--- a/src/encoding/xml/marshal.go
+++ b/src/encoding/xml/marshal.go
@@ -24,10 +24,10 @@ const (
 
 // Marshal returns the XML encoding of v.
 //
-// Marshal handles an array or slice by marshalling each of the elements.
-// Marshal handles a pointer by marshalling the value it points at or, if the
+// Marshal handles an array or slice by marshaling each of the elements.
+// Marshal handles a pointer by marshaling the value it points at or, if the
 // pointer is nil, by writing nothing. Marshal handles an interface value by
-// marshalling the value it contains or, if the interface value is nil, by
+// marshaling the value it contains or, if the interface value is nil, by
 // writing nothing. Marshal handles all other data by writing one or more XML
 // elements containing the data.
 //
@@ -36,9 +36,9 @@ const (
 //     - the value of the XMLName field of type Name
 //     - the tag of the struct field used to obtain the data
 //     - the name of the struct field used to obtain the data
-//     - the name of the marshalled type
+//     - the name of the marshaled type
 //
-// The XML element for a struct contains marshalled elements for each of the
+// The XML element for a struct contains marshaled elements for each of the
 // exported fields of the struct, with these exceptions:
 //     - the XMLName field, described above, is omitted.
 //     - a field with tag "-" is omitted.
@@ -51,9 +51,9 @@ const (
 //     - a field with tag ",cdata" is written as character data
 //       wrapped in one or more <![CDATA[ ... ]]> tags, not as an XML element.
 //     - a field with tag ",innerxml" is written verbatim, not subject
-//       to the usual marshalling procedure.
+//       to the usual marshaling procedure.
 //     - a field with tag ",comment" is written as an XML comment, not
-//       subject to the usual marshalling procedure. It must not contain
+//       subject to the usual marshaling procedure. It must not contain
 //       the "--" string within it.
 //     - a field with a tag including the "omitempty" option is omitted
 //       if the field value is empty. The empty values are false, 0, any
diff --git a/src/encoding/xml/marshal_test.go b/src/encoding/xml/marshal_test.go
index 1cc07549b7..d79b99a1e0 100644
--- a/src/encoding/xml/marshal_test.go
+++ b/src/encoding/xml/marshal_test.go
@@ -396,7 +396,7 @@ var (
 // Unless explicitly stated as such (or *Plain), all of the
 // tests below are two-way tests. When introducing new tests,
 // please try to make them two-way as well to ensure that
-// marshalling and unmarshalling are as symmetrical as feasible.
+// marshaling and unmarshaling are as symmetrical as feasible.
 var marshalTests = []struct {
 	Value         interface{}
 	ExpectXML     string
diff --git a/src/encoding/xml/read.go b/src/encoding/xml/read.go
index ed4470f3eb..5a89d5f504 100644
--- a/src/encoding/xml/read.go
+++ b/src/encoding/xml/read.go
@@ -90,7 +90,7 @@ import (
 //   * An anonymous struct field is handled as if the fields of its
 //      value were part of the outer struct.
 //
-//   * A struct field with tag "-" is never unmarshalled into.
+//   * A struct field with tag "-" is never unmarshaled into.
 //
 // Unmarshal maps an XML element to a string or []byte by saving the
 // concatenation of that element's character data in the string or
@@ -142,7 +142,7 @@ func (d *Decoder) DecodeElement(v interface{}, start *StartElement) error {
 	return d.unmarshal(val.Elem(), start)
 }
 
-// An UnmarshalError represents an error in the unmarshalling process.
+// An UnmarshalError represents an error in the unmarshaling process.
 type UnmarshalError string
 
 func (e UnmarshalError) Error() string { return string(e) }
diff --git a/src/encoding/xml/read_test.go b/src/encoding/xml/read_test.go
index b53d72c716..273c303d16 100644
--- a/src/encoding/xml/read_test.go
+++ b/src/encoding/xml/read_test.go
@@ -705,7 +705,7 @@ func TestUnmarshalIntoInterface(t *testing.T) {
 	}
 	pea, ok := pod.Pea.(*Pea)
 	if !ok {
-		t.Fatalf("unmarshalled into wrong type: have %T want *Pea", pod.Pea)
+		t.Fatalf("unmarshaled into wrong type: have %T want *Pea", pod.Pea)
 	}
 	have, want := pea.Cotelydon, "Green stuff"
 	if have != want {
diff --git a/src/encoding/xml/typeinfo.go b/src/encoding/xml/typeinfo.go
index b9996a164b..6623c78308 100644
--- a/src/encoding/xml/typeinfo.go
+++ b/src/encoding/xml/typeinfo.go
@@ -48,7 +48,7 @@ var tinfoLock sync.RWMutex
 var nameType = reflect.TypeOf(Name{})
 
 // getTypeInfo returns the typeInfo structure with details necessary
-// for marshalling and unmarshalling typ.
+// for marshaling and unmarshaling typ.
 func getTypeInfo(typ reflect.Type) (*typeInfo, error) {
 	tinfoLock.RLock()
 	tinfo, ok := tinfoMap[typ]
@@ -214,7 +214,7 @@ func structFieldInfo(typ reflect.Type, f *reflect.StructField) (*fieldInfo, erro
 	}
 
 	// If the field type has an XMLName field, the names must match
-	// so that the behavior of both marshalling and unmarshalling
+	// so that the behavior of both marshaling and unmarshaling
 	// is straightforward and unambiguous.
 	if finfo.flags&fElement != 0 {
 		ftyp := f.Type
@@ -334,7 +334,7 @@ Loop:
 	return nil
 }
 
-// A TagPathError represents an error in the unmarshalling process
+// A TagPathError represents an error in the unmarshaling process
 // caused by the use of field tags with conflicting paths.
 type TagPathError struct {
 	Struct       reflect.Type